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IEEE/ICACT20260355 Question.1 Questioner: pangb@dsp.ac.cn 2026-02-05 오후 4:31:56	IEEE/ICACT20260355 Answer.1 Answer by Auhor xueyy@dsp.ac.cn 2026-02-05 오후 4:31:56
What is the content of the feedback returned to the sender in the closed-loop feedback system? Does it indicate the success of the decoding result, or does it confirm the successful transmission of each data packet?	This closed-loop feedback is not a per-packet ACK/confirmation mechanism; instead, it is a per-round (or per-window τ) feedback that combines decoding-state information and arrival statistics. Specifically, it indicates whether decoding succeeds (via fail_t) and uses s_t to reflect the overall arrival ratio of coded packets in that round, but it does not confirm the successful transmission of each individual data packet.

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